Page 175 - 6th grade IM flipbook

7.3 Activity: Art Paste on a Double Number Line
Card 12 of 24
A recipe for art paste says “For every 2 pints of water, mix in 8 cups of our.” 1. Follow the instructions to draw a double number line diagram
representing the recipe for art paste.
a. Use a ruler to draw two parallel lines.
b. Label the rst line “pints of water.” Label the second line “cups of our.”
c. Draw at least 6 equally spaced tick marks that line up on both lines.
d. Along the water line, label the tick marks with the amount of water in 0, 1, 2, 3, 4, and 5 batches of art paste.
e. Along the our line, label the tick marks with the amount of our in 0, 1, 2, 3, 4, and 5 batches of art paste.
Teaching notes
Pacing: 20 minutes for entire activity
This entire activity spans 4 cards. This is card 2 of 4. Launch
“You just used a double number line to solve some problems. Now, you’ll create a double number line from scratch. Once you know how to make double number lines, you can use them for any situation with
equivalent ratios.”
Arrange students in groups of 2.
Ensure each student has access to a ruler.
Have students check with a partner and come to an agreement about how to draw the diagrams before moving on to question 3.
Student response
1. The correctly drawn and labeled number line should look like the one below. The places to nd answers to the following questions are circled.
Anticipated misconceptions
Students may not label tick marks with equal increments or may not align the tick marks.
Support for English Language Learners
Lighter Support: MLR 8 (Discussion Supports).Briey review the meaning of the following terms: parallel, label, equal increments, tick marks, line up, amount, and batch. Remind students that one batch of art paste uses 2 pints of water and 8 cups of our. In pairs, have students discuss each question, agree on a strategy, and decide how to justify their reasoning.
Support for students with disabilities
Receptive/Expressive Language: Peer Tutors. Pair students with their previously identied peer tutors to aid in comprehension and expression of understanding.